Merge tag 'hyperv-next-signed-20230424' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

Pull hyperv updates from Wei Liu:

 - PCI passthrough for Hyper-V confidential VMs (Michael Kelley)

 - Hyper-V VTL mode support (Saurabh Sengar)

 - Move panic report initialization code earlier (Long Li)

 - Various improvements and bug fixes (Dexuan Cui and Michael Kelley)

* tag 'hyperv-next-signed-20230424' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (22 commits)
  PCI: hv: Replace retarget_msi_interrupt_params with hyperv_pcpu_input_arg
  Drivers: hv: move panic report code from vmbus to hv early init code
  x86/hyperv: VTL support for Hyper-V
  Drivers: hv: Kconfig: Add HYPERV_VTL_MODE
  x86/hyperv: Make hv_get_nmi_reason public
  x86/hyperv: Add VTL specific structs and hypercalls
  x86/init: Make get/set_rtc_noop() public
  x86/hyperv: Exclude lazy TLB mode CPUs from enlightened TLB flushes
  x86/hyperv: Add callback filter to cpumask_to_vpset()
  Drivers: hv: vmbus: Remove the per-CPU post_msg_page
  clocksource: hyper-v: make sure Invariant-TSC is used if it is available
  PCI: hv: Enable PCI pass-thru devices in Confidential VMs
  Drivers: hv: Don't remap addresses that are above shared_gpa_boundary
  hv_netvsc: Remove second mapping of send and recv buffers
  Drivers: hv: vmbus: Remove second way of mapping ring buffers
  Drivers: hv: vmbus: Remove second mapping of VMBus monitor pages
  swiotlb: Remove bounce buffer remapping for Hyper-V
  Driver: VMBus: Add Devicetree support
  dt-bindings: bus: Add Hyper-V VMBus
  Drivers: hv: vmbus: Convert acpi_device to more generic platform_device
  ...

2 files changed, 2 insertions, 48 deletions

diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index dd5919ec408b..33d51e363913 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -1139,7 +1139,6 @@ struct netvsc_device {
 
 	/* Receive buffer allocated by us but manages by NetVSP */
 	void *recv_buf;
-	void *recv_original_buf;
 	u32 recv_buf_size; /* allocated bytes */
 	struct vmbus_gpadl recv_buf_gpadl_handle;
 	u32 recv_section_cnt;
@@ -1148,7 +1147,6 @@ struct netvsc_device {
 
 	/* Send buffer allocated by us */
 	void *send_buf;
-	void *send_original_buf;
 	u32 send_buf_size;
 	struct vmbus_gpadl send_buf_gpadl_handle;
 	u32 send_section_cnt;
diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
index da737d959e81..82e9796c8f5e 100644
--- a/drivers/net/hyperv/netvsc.c
+++ b/drivers/net/hyperv/netvsc.c
@@ -154,17 +154,8 @@ static void free_netvsc_device(struct rcu_head *head)
 	int i;
 
 	kfree(nvdev->extension);
-
-	if (nvdev->recv_original_buf)
-		vfree(nvdev->recv_original_buf);
-	else
-		vfree(nvdev->recv_buf);
-
-	if (nvdev->send_original_buf)
-		vfree(nvdev->send_original_buf);
-	else
-		vfree(nvdev->send_buf);
-
+	vfree(nvdev->recv_buf);
+	vfree(nvdev->send_buf);
 	bitmap_free(nvdev->send_section_map);
 
 	for (i = 0; i < VRSS_CHANNEL_MAX; i++) {
@@ -347,7 +338,6 @@ static int netvsc_init_buf(struct hv_device *device,
 	struct nvsp_message *init_packet;
 	unsigned int buf_size;
 	int i, ret = 0;
-	void *vaddr;
 
 	/* Get receive buffer area. */
 	buf_size = device_info->recv_sections * device_info->recv_section_size;
@@ -383,17 +373,6 @@ static int netvsc_init_buf(struct hv_device *device,
 		goto cleanup;
 	}
 
-	if (hv_isolation_type_snp()) {
-		vaddr = hv_map_memory(net_device->recv_buf, buf_size);
-		if (!vaddr) {
-			ret = -ENOMEM;
-			goto cleanup;
-		}
-
-		net_device->recv_original_buf = net_device->recv_buf;
-		net_device->recv_buf = vaddr;
-	}
-
 	/* Notify the NetVsp of the gpadl handle */
 	init_packet = &net_device->channel_init_pkt;
 	memset(init_packet, 0, sizeof(struct nvsp_message));
@@ -497,17 +476,6 @@ static int netvsc_init_buf(struct hv_device *device,
 		goto cleanup;
 	}
 
-	if (hv_isolation_type_snp()) {
-		vaddr = hv_map_memory(net_device->send_buf, buf_size);
-		if (!vaddr) {
-			ret = -ENOMEM;
-			goto cleanup;
-		}
-
-		net_device->send_original_buf = net_device->send_buf;
-		net_device->send_buf = vaddr;
-	}
-
 	/* Notify the NetVsp of the gpadl handle */
 	init_packet = &net_device->channel_init_pkt;
 	memset(init_packet, 0, sizeof(struct nvsp_message));
@@ -762,12 +730,6 @@ void netvsc_device_remove(struct hv_device *device)
 		netvsc_teardown_send_gpadl(device, net_device, ndev);
 	}
 
-	if (net_device->recv_original_buf)
-		hv_unmap_memory(net_device->recv_buf);
-
-	if (net_device->send_original_buf)
-		hv_unmap_memory(net_device->send_buf);
-
 	/* Release all resources */
 	free_netvsc_device_rcu(net_device);
 }
@@ -1844,12 +1806,6 @@ cleanup:
 	netif_napi_del(&net_device->chan_table[0].napi);
 
 cleanup2:
-	if (net_device->recv_original_buf)
-		hv_unmap_memory(net_device->recv_buf);
-
-	if (net_device->send_original_buf)
-		hv_unmap_memory(net_device->send_buf);
-
 	free_netvsc_device(&net_device->rcu);
 
 	return ERR_PTR(ret);